There's no better way to show off a major weight loss than to rock a sexy outfit and that's exactly what Kim Kardashian did when she appeared on The Tonight Show with Jay Leno. Kim wore a sheer white lace dress for the appearance with a black bra underneath. The reality star spoke about her weight gain with the host saying that she looked so big because she developed preeclampsia during her pregnancy. Kim also told Jay she's hit her goal and lost a whopping 50 lbs! Check out Kim's weight loss here!